About this event
Join us to learn more about the passive sampler device for monitoring chemical contaminants.
đ What youâll learn in this new webinar:
The design, development and subsequent application of a novel, 3D-printed miniaturised passive sampling device (3D-PSD) for the measurement of chemical contaminants is presented herein.
The miniaturised 3D-PSD has the capacity to hold five 9 mm passive sampler sorbents and consisted of three core parts which connect via an interference fit. The sampling rates (Rs) of three different sorbents (HLB (divinylbenzene-co-N-vinylpyrrolidone), anion exchange, and cation exchange, Affinisep AttractSPEÂź disks) were assessed in the laboratory over ten days at low exposure concentrations (50 and 100 ng/L) in artificial freshwater (AFW). The sampling rates ranged from 0.3 to 12.3 mL/day, 0.3 to 18.8 mL/day, and 2.0 to 81.0 mL/day for HLB, anion and cation sorbents, respectively.
The 3D-PSDs were subsequently deployed in an urban freshwater UK river in 2021 downstream of a pollution source. Monthly, ten 3D-PSDs (n = 3 per sorbent phase and n = 1 multiplexed with all three sorbents) were deployed for seven days with co-occurring water and G. pluex collections during deployment and retrieval to assess trends between the two matrices with the view to move towards the prediction of G. pulex concentrations from the 3D-PSD data.
Other applications of the 3D-PSD include large-scale catchment monitoring via citizen science, PFAS monitoring in freshwaters, chemical contaminant monitoring in marine environments, and in soil.
Animated by:
Guest speaker: Dr Alexandra Richardson, Research Associate, Imperial College London
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